Ashrae duct fitting database pdf free download

 · This database CD includes loss coefficient tables for more than round, rectangular, and flat oval duct fittings. Featuring pictorial outlines of each fitting, this CD is useful to design engineers dealing with a variety of duct fittings. Get Free Ashrae Duct Fitting Database This database, available on CD, includes loss coefficient tables for more than round, rectangular, and flat oval duct fittings. Featuring pictorial outlines of each fitting, this CD is useful to design engineers readers . See the elbow charts in the ASHRAE Duct Fitting Database. Our own studies (United McGills) show that loss coefficients in branch fittings are more a function of velocity pressure than size, but sizes still have to be known to properly determine the dynamic loss coefficient from the ASHRAE Duct Fitting Database, so a one size fits all loss.

Example of Duct Fitting Loss V u = Upstream velocity of fitting H = Height of the duct W = Width of the duct R = Radius of the bend Θ = Angle of the radius Calculate the pressure loss of the duct fitting in a mm W x mm H duct with a radius of mm and a 90° Bend angle. Say Reynolds number as Therefore the pressure loss is Ashrae duct fitting database version If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. © ASHRAE Duct Fitting Database. DFDB maintenance is by ASHRAE Technical Committee (TC) , Duct Design, and John Downey.

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